Chapter 5,Problem e:Let Us C by Yashawant Kanetkar Solution manual

Problem Statement:

Write a recursive function to obtain the running sum of first
25 natural numbers.

Solution:

//Ahmad Furqan

//P5.e

#include <iostream>

#include <conio.h>

using namespace std;

int sum_nat(int num)

{

if (num == 25)

return num;

return num + sum_nat(num + 1);  //return current num + sum of numbers above this num and upto 25

}

void main(void)

{

cout << "Sum of first 25 Natural Numbers is: ";

cout << sum_nat(1);

_getch();

}